(Nate Carlisle | The Salt Lake Tribune) The Chuckwalla Trail meets the Halfway Wash Trail in the Red Cliffs Desert Reserve in St. George. (Nate Carlisle | The Salt Lake Tribune) The Chuckwalla Trail starts at a parking area along Bluff Street in St. George. The trail wanders into the Red Cliffs Desert Reserve. (Nate Carlisle | The Salt Lake Tribune) The Halfway Wash runs through the Red Cliffs Desert Reserve.